Bag opening and filling machine



Jan. 30; 1923.

K. OTTING. BAG OPENING AND F1 LLING MACHINE.

ORIGINAL FILED MAY 12, 1921 Witnesses:

Patented Jan. 30, 1923.

KARL OTTING, OF BERLIN, GERIIIANY.

BAG OPENING AND FILLING MACHINE.

Original application filed May 12, 1921, Serial No, 468,866. Divided andthis application filed May 16,

Serial No. 561,509.

(GRANTED UNDER THE IROVISIQNS OF THE ACT OF MARCH 3, 1921,41 STAT. L,i313.)

Z '0 all whom it may concern lie it known that I, Kant. OTTING, acitizen of the German Republic, and a resident of Berlin, Germany, haveinvented certain new and useful Improvements in Bag Opening and FillingMachines, of which the following is a specification, and for which Ihave obtained German Patents 345,029, on Sept. 27, 1921, and 349,417, onDecember 30, 1921, both patents being granted on an application filedApril 26, 1919, and British Patent 157,320, on June 28, 1921, onapplication filed January 10, 1921 (the present application beingdivided out of my copending patent application Serial No. 468,866, filedMay 12, 1921).

In bag opening and filling machines provided with rotatable bag openersit is very difficult to effect in a reliable manner, that the bagopeners in every turn take a bag from the pile of bags and that then oneopener after the other presents to the fillingdevice a bag without fail.

According to this invention the bags are piled within a magazinevertically upon one another so that they can be withdrawn fromunderneath. The lowest bag is stripped from the magazine bytherespective opener under the weight of the pile of the bags resting uponit, and thus it is not necessary to have separate weights for pressingdown the in the magazine. lVith the latter eo-operates a turret carryingthe bag openers in such a manner that a number of similar bag openersare moved one after the other into a horizontal position for withdrawingthe bags from the vertical pile, and during the intermittent stopping ofthe machine are held in such a manner that the vertically andhorizontally moved magazine pushes the lowest bag on to the horizontallypresented bag opener from the latter.

As the turret carrying the bag openers continues its movement, the bagopeners together with the bags slipped on to them are brought again intoa vertical position. and present the bag to the filling hopper,whereupon after a further movement the filled bags are delivered to aclosing device or may be closed by hand.

A. constructional example of this invenand then moves away tionillustrated. in the accompanying drawing in which lj ig. 1 is a sideclevationthereof and Hi g. 2 a plan view.

The bag magazine a for the bags as, which are placed in said magazinewith the part to be flapped directed upwardly, and are lying upon oneanother in a vertical pile, is guided along a bar Z). The bar 6 is fixedto a slide Z) which is guided vertically in the frame 0. The frame 0 isbolted to the base plate (Z. v

The rotational motion is transmitted from the main shaft m which latteris driven by a pulley m. The main shaft or transmits its rotation by achain gearing it, n, 0 to the shaft eand hence by a bevel gearing e anda chain gearing e to the shaft to. The shaft 20 carries a cam 72engaging with a roll 6 of the slide Z). By the rotation of the cam b thebag magazine a is raised and lowered. On the shaft w there isfurthermounted a crank a, which by means of the connecting rod o moves the bagmagazine to-and-fro along the bar Z).

This motion is such that the-bag magazine a pushes the lowest bag on tothe horizontal bag opener 7 presented to it and then moves away from thesaid opener.

Owing to the influence of the cam b and the crank a the motion of thebag magazine a is substantially rectangular.

At the side of the bag magazine a there is mounted on the plate d thebag opener turret comprising a hollow shaft 2' rovided with arms bagopeners 7", of which for instance four are present. These bag openersare adapted to rock on the shafts f and of-loeing moved by a cam g,engaging with the rollers f of the bag openers f, alternately into thehorizontal position shown at the right hand of Fig. 1, or into thevertical position shown at the left hand of the said figure.

The turret 2 is rotated in an intermittent motion by means of a bevelgear m and a carrying on shafts f the gear known as Maltese-cross or anyother shaft Durii'ig each revolution of the main shaft m and ot thelocking plate Z the crose-wheelv Z is once engaged L the roll Z on theend of the crank Z and rotated for the fourth part or a revolution inaccordance with the number of bag openers f. it will be understood, thatthe turret .2 is rotated only, after a bag has heen pushed on its bag;opener 7' presented to the bag magazine a, and that the turret .2 is atstandstill during: this pushing motion.

After a quarter rotation of the turr the bag openers '7 together withthe pu on hag, pass from the position i in Fig. into the verticalposition ll underneath 'i'l filling hopper h which belo dcvici: of anyknown construction. i example shown the hopper receives the contents foreach of the bags from a. digtributing cyrinder t rotating below a largerhopper 11 containing a stored supply ol the material to he filled intothe bags. The axle of the cylinder 25 carries a grooved wheel which isengaged hv a pin u on the chain wheel 1'" driven by chain gearing o, ofrom the shaft 6. During the time in which the turret- 2' is at rest forthe purpose of strip ping the lowest on the bag opener j" presented inthe horizontal position I to the magazine (1, the cylinder receives atial revolution in order to deliver a il11F urcd quantity of thematerial throu hopper 71 and the beg opener j, which h t-he form of achute into the ban ()CCll';)f.ll1,f,f now the position ll.

After the filling, the bags pass during a. further quarter revolution ofthe turret .2" into a position opposite the closing" do. (position ill).in general the triction between the bags and the openers issitflicientlv great to cause the bags to be helc lirmlv upon the bagopener during; the 'inoven'ient from position 11 into position Hi.However in order to prevent an unintentional sliding off of the filledfrom the bag opener, asat'ety bar i is provided under their path.ilehind ach bag" opener f there is guided on its carrier 7*, a stripper7'": which in the position Ul is set in operation to strip off the bags'h'OD'l the opener 7. This is etlected by a double lever p, which isswinging on a. pin '0 and carries on one end a roll p" entering aiJ-shaped frame (1 of the stripper The other end or the lever 72 isengaged by a cam p on an extension 0 of the shaft 6. In the position Ilof the openers f, the turret 2 being at rest the earn 79 raises theneighbouring end of the lever 39' and its other end pushes down theripper T he filled bags are received by a guide through 15 to he closedin any known manner.

l'hivingr now particularly described the nature of my invention, wuat Icluini as new and desire to secure by Letters .latent' of the UnitedStates is:

l. A bag o 'iening and filling machine, comprising a ban ina azine adaptl to receive therein the verti. ally piled ha 1 rotatable bag presen ingturret, a pier lit-y of bag openers carried by said turret, a lillindevice, means for moving the hue; magazine relativ lv to the bag openersand 111135.. swine'n the bag; openers into one position in order toreceive a bag); from the beg; magazine and to present the has; strippedonto the opener to the filling device in the other position.

2. A bag opening and filling machine, comprising a bag ma -azine adaptedto r ceive therein the vertically piled bans, e. rotatahle hagpresenting turret, a phnralitv oi? liagopeners carried by said turret, afilling device. means for moving the bar: magazine horizontally andvertically relatively to the bag openers and means for swinging the bagopeners into one position in. order to receive a hen; from the bagmagazine and to present the ban stripped onto the opener to the fillingdevice in theother position.

In testimony whereoi I aflix rev signature in presence of two witnesses.

KARL (YiTlilli.

\Vitnesses it. hlon'rzrnrrsn, R. 'l. Answer.

